Na2[PtCl6] + 4H2O ๐งโกโ 2NaOH + 3Cl2โ + PtO2 + 3H2โ
Last updated:
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
- Na2[PtCl6]Sodium hexachloridoplatinate(IV) + 4H2OWater2NaOHSodium hydroxide + 3โ + PtO2Platinum(IV) oxide + 3โ๐งโกโถ
Electrolysis of aqueous sodium hexachloridoplatinate(IV) yields sodium hydroxide, , platinum(IV) oxide, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
- Na2[PtCl6]Sodium hexachloridoplatinate(IV) + 4H2OWater2NaOHSodium hydroxide + 3โ + PtO2Platinum(IV) oxide + 3โ๐งโกโถ
General equation
- Electrolysis of aqueous solution with water as oxidizing agent
- Miscible with water/Very soluble in water/Soluble in waterReducing agent + H2OOxidizing agent๐งโกโถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na2[PtCl6] | Sodium hexachloridoplatinate(IV) | 1 | Reducing | Very soluble in water |
| H2O | Water | 4 | Oxidizing | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaOH | Sodium hydroxide | 2 | โ | โ |
| 3 | Oxidized | โ | ||
| PtO2 | Platinum(IV) oxide | 1 | โ | โ |
| 3 | Reduced | โ |
Thermodynamic changes
Changes in aqueous solution (1)
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
- Na2[PtCl6]Crystalline solid + 4H2OLiquid2NaOHIonized aqueous solution + 3โGas + PtO2Gas + 3โGas๐งโกโถ
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 1490.5 | โ | โ | โ |
per 1 mol of | 1490.5 | โ | โ | โ |
per 1 mol of | 372.63 | โ | โ | โ |
per 1 mol of | 745.25 | โ | โ | โ |
| 496.83 | โ | โ | โ | |
per 1 mol of | 1490.5 | โ | โ | โ |
| 496.83 | โ | โ | โ |
Changes in aqueous solution (2)
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
- Na2[PtCl6]Crystalline solid + 4H2OLiquid2NaOHIonized aqueous solution + 3โGas + PtO2Gas + 3โUn-ionized aqueous solution๐งโกโถ
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 1477.9 | โ | โ | โ |
per 1 mol of | 1477.9 | โ | โ | โ |
per 1 mol of | 369.48 | โ | โ | โ |
per 1 mol of | 738.95 | โ | โ | โ |
| 492.63 | โ | โ | โ | |
per 1 mol of | 1477.9 | โ | โ | โ |
| 492.63 | โ | โ | โ |
Changes in aqueous solution (3)
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
- Na2[PtCl6]Crystalline solid + 4H2OLiquid2NaOHIonized aqueous solution + 3โUn-ionized aqueous solution + PtO2Gas + 3โGas๐งโกโถ
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 1420.3 | โ | โ | โ |
per 1 mol of | 1420.3 | โ | โ | โ |
per 1 mol of | 355.07 | โ | โ | โ |
per 1 mol of | 710.15 | โ | โ | โ |
| 473.43 | โ | โ | โ | |
per 1 mol of | 1420.3 | โ | โ | โ |
| 473.43 | โ | โ | โ |
Changes in aqueous solution (4)
- Electrolysis of aqueous sodium hexachloridoplatinate(IV) with water as oxidizing agent
- Na2[PtCl6]Crystalline solid + 4H2OLiquid2NaOHIonized aqueous solution + 3โUn-ionized aqueous solution + PtO2Gas + 3โUn-ionized aqueous solution๐งโกโถ
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 1407.7 | โ | โ | โ |
per 1 mol of | 1407.7 | โ | โ | โ |
per 1 mol of | 351.93 | โ | โ | โ |
per 1 mol of | 703.85 | โ | โ | โ |
| 469.23 | โ | โ | โ | |
per 1 mol of | 1407.7 | โ | โ | โ |
| 469.23 | โ | โ | โ |
Thermodynamic data of reactants
| Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
|---|---|---|---|---|
| Na2[PtCl6] (cr) | -1115.9[1] | โ | โ | โ |
| Na2[PtCl6] (cr) 2 hydrate | -1723.8[1] | โ | โ | โ |
| Na2[PtCl6] (cr) 6 hydrate | -2912.1[1] | โ | โ | โ |
| H2O (cr) | โ | โ | โ | โ |
| H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
| H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
* (cr):Crystalline solid, (l):Liquid, (g):Gas
Thermodynamic data of products
| Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
|---|---|---|---|---|
| NaOH (cr) | -425.609[1] | -379.494[1] | 64.455[1] | 59.54[1] |
| NaOH (g) | -207.1[1] | -210.0[1] | 228.43[1] | 48.37[1] |
| NaOH (ai) | -470.114[1] | -419.150[1] | 48.1[1] | -102.1[1] |
| NaOH (cr) 1 hydrate | -734.543[1] | -629.338[1] | 99.50[1] | 90.17[1] |
| NaOH (l) 2 hydrate | -1019.076[1] | -873.091[1] | 195.979[1] | 239.41[1] |
| NaOH (l) 3.5 hydrate | -1459.798[1] | -1236.356[1] | 286.089[1] | 354.43[1] |
| NaOH (l) 4 hydrate | -1605.15[1] | -1356.64[1] | 318.70[1] | โ |
| NaOH (l) 5 hydrate | -1894.31[1] | -1596.34[1] | 386.06[1] | โ |
| NaOH (l) 7 hydrate | -2469.02[1] | -2073.80[1] | 526.31[1] | โ |
| (g) | 0[1] | 0[1] | 223.066[1] | 33.907[1] |
| (ao) | -23.4[1] | 6.94[1] | 121[1] | โ |
| PtO2 (g) | 171.5[1] | 167.8[1] | โ | โ |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | โ |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (l):Liquid, (ao):Un-ionized aqueous solution
References
List of references
- 1Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- ^ ฮfHยฐ, -1115.9 kJ ยท molโ1
- ^ ฮfHยฐ, -1723.8 kJ ยท molโ1
- ^ ฮfHยฐ, -2912.1 kJ ยท molโ1
- ^ ฮfHยฐ, -285.830 kJ ยท molโ1
- ^ ฮfGยฐ, -237.129 kJ ยท molโ1
- ^ Sยฐ, 69.91 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 75.291 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -241.818 kJ ยท molโ1
- ^ ฮfGยฐ, -228.572 kJ ยท molโ1
- ^ Sยฐ, 188.825 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 33.577 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -425.609 kJ ยท molโ1
- ^ ฮfGยฐ, -379.494 kJ ยท molโ1
- ^ Sยฐ, 64.455 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 59.54 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -207.1 kJ ยท molโ1
- ^ ฮfGยฐ, -210.0 kJ ยท molโ1
- ^ Sยฐ, 228.43 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 48.37 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -470.114 kJ ยท molโ1
- ^ ฮfGยฐ, -419.150 kJ ยท molโ1
- ^ Sยฐ, 48.1 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -102.1 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -734.543 kJ ยท molโ1
- ^ ฮfGยฐ, -629.338 kJ ยท molโ1
- ^ Sยฐ, 99.50 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 90.17 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1019.076 kJ ยท molโ1
- ^ ฮfGยฐ, -873.091 kJ ยท molโ1
- ^ Sยฐ, 195.979 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 239.41 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1459.798 kJ ยท molโ1
- ^ ฮfGยฐ, -1236.356 kJ ยท molโ1
- ^ Sยฐ, 286.089 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 354.43 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1605.15 kJ ยท molโ1
- ^ ฮfGยฐ, -1356.64 kJ ยท molโ1
- ^ Sยฐ, 318.70 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1894.31 kJ ยท molโ1
- ^ ฮfGยฐ, -1596.34 kJ ยท molโ1
- ^ Sยฐ, 386.06 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -2469.02 kJ ยท molโ1
- ^ ฮfGยฐ, -2073.80 kJ ยท molโ1
- ^ Sยฐ, 526.31 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 223.066 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 33.907 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -23.4 kJ ยท molโ1
- ^ ฮfGยฐ, 6.94 kJ ยท molโ1
- ^ Sยฐ, 121. J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 171.5 kJ ยท molโ1
- ^ ฮfGยฐ, 167.8 kJ ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 130.684 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 28.824 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -4.2 kJ ยท molโ1
- ^ ฮfGยฐ, 17.6 kJ ยท molโ1
- ^ Sยฐ, 577 J ยท Kโ1 ยท molโ1